Re: Tempest XY Adjustment

Todd, All:

        I have the same problem with one of my Tempest boards, i.e., a second
board works perfectly fine with the *same* WG6100 tube -- but #1
features the "pincushion" effect from Todd's pictures, no matter how
the XY pots are adjusted.

        A trusted expert once told me that this is a problem with one or more
of the chips in the lower right-hand side of the main board (where the
pots are, i.e., in the A-E 10--13 area), I suppose with DAC-related
functions. Unfortunately, I don't remember exactly which ones he
identified at the time ... (I have been using the good board since
then).

        Any thoughts, comments, advice (for Todd or me)?

        Alex

On Dec 7, 2008, at 1:28 PM, litterbox99@mchsi.com wrote:

>
> I've been working on my Tempest and decided to rebuild
> a few monitors and swap them out of my machines. My
> Tempest has a bad curve or bow at the bottom of the screen.
>
> It's not a monitor issue, tried several and problem still
> persists. I replaced the XY adjust pots, so I'm wondering
> if its a component issue ? I've seen other screen shots
> of Tempest games and the bottoms have nice straight lines
> and text.
>
> http://home.mchsi.com/~litterbox99/temp/cross.jpg
>
> http://home.mchsi.com/~litterbox99/temp/main.jpg
>
> http://home.mchsi.com/~litterbox99/temp/test.jpg
>
> http://home.mchsi.com/~litterbox99/temp/break.jpg
>
> I just can't seem to adjust this out, has anyone
> seen this before ?
>
> Todd
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Received on Sun Dec 7 15:03:44 2008